AA 3903 then WN 1722 at Phoenix
Yuma → Phoenix → Las Vegas
Timetable, Phoenix time
21:14AA 3903 from Yuma at the gate
18:20WN 1722 to Las Vegas leaves the gate
21 h 06 apart on the timetable, overnight
WN 1722 leaves 21 h 06 after AA 3903 arrives on the timetable: more than half a day, so not a connection we count.